CN102407559A - Method for pouring working lining of half steel ladle - Google Patents
Method for pouring working lining of half steel ladle Download PDFInfo
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- CN102407559A CN102407559A CN2011103612542A CN201110361254A CN102407559A CN 102407559 A CN102407559 A CN 102407559A CN 2011103612542 A CN2011103612542 A CN 2011103612542A CN 201110361254 A CN201110361254 A CN 201110361254A CN 102407559 A CN102407559 A CN 102407559A
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Abstract
The invention relates to a method for pouring a working lining of a half steel ladle, which belongs to the technical field of integrated pouring of an inner lining of the half steel ladle in ferrous metallurgy. The technical scheme is that: the pouring process is carried out according to a sequence of firstly pouring a ladle bottom and an impact block, and pouring a ladle wall, then pouring an impact protection ring; the ladle bottom impact block is located on a ladle bottom permanent lining, and the ladle bottom impact block (6) is integrally poured with the ladle bottom permanent lining (4) and a ladle bottom working lining (7); and the impact protection ring is poured by a mould, the impact protection ring (11) is located in a connection region between a ladle bottom working lining (5) and a ladle wall working lining (8), and the impact protection ring is integrally poured with the ladle bottom working lining and the ladle wall working lining. The method provided by the invention is used for pouring heavily corroded ladle wall incomplete linings of the ladle bottom working lining and new working lining of the half steel ladle; the service life of the working lining is prolonged, the consumption of the fireproof material of the ladle lining is reduced, the integrated ladle lining can be used for above 450 times in a furnace and the consumption of the pouring resistant material of the working lining of the half steel ladle of the ton steel is reduced by above 1/3 than before.
Description
Technical field
The present invention relates to a kind of half steel job contract and make the liner in pouring method, belong to the integrated poured technical field of half steel ladle-lining in the Ferrous Metallurgy.
Background technology
The integrated poured fetal membrane of half ladle working lining is that steel plant continuous casting half ladle working lining adopts the integrated poured key construction equipment of pours.After the integrated poured new working lining of half steel bag uses, corrode layer through residual lining and carry out repairing after the lift-off processing,, reduce the cylinder-packing refractory consumption rate to prolong for half ladle working lining service life to working lining.Longer because of half ladle working lining integrated poured construction period, 1 integrated poured use of working lining can not be satisfied the steel-making needs, and pouring technology is arranged usually, generally according at the bottom of the first pouring ladle, back pouring ladle wall design fetal membrane (with the scheme of calling in the following text 1); Perhaps according to design fetal membrane (with the scheme of calling in the following text 2) at the bottom of first pouring ladle wall, the back pouring ladle.Two kinds of technological design schemes are different with the pouring procedure of the residual lining of working lining to the new working lining of cast half steel bag; Effect is also variant, is in particular in following two aspects: the one, adopt scheme 1 relatively rationally, employing scheme 1 during the new working lining of cast half steel bag; After treating material feeding of first pouring ladle bottom pour mold and curing; Be convenient at the bottom of the pack processing and the junction of wrapping wall, put into cast fetal membrane pouring ladle wall working lining again, can guarantee integrated poured quality; Employing scheme 2, the junction at the Bao Biyu bag end is a perps, when half steel water injects; Roll up and down greater than laterally rolling, the probability of quality defects is big, influences cylinder-packing and gets service life; But the fixing and adjustment that helps pouring into a mould fetal membrane helps guaranteeing to wrap the design thickness of wall cast.The 2nd, to look the bag end erosion degree when the residual lining after using is watered and decide, scheme 1 is used in the cover that corrodes the lighter residual lining of working lining in the bag end and waters, and strips off the skin at the bottom of at this moment can the bag to the residual lining of working lining to handle the back and overlap and water; The cover that scheme 2 is used in the heavier residual lining of working lining of bag end erosion waters, and can bag bottom cover be watered behind the bag end working lining complete removal, adopts vibrating head vibration moulding, the new bag of the cast end then.In recent years; Development along with molten steel refining technology; Generally adopt the refining continuous casting process, to bag wall working lining corrode light, bag end working lining is corroded heavy, background technology can not satisfy present various refinery practice and the cover pouring technique requirement of the residual lining of half ladle working lining deposited; The integrated poured fetal membrane application technology defectiveness of existing half ladle working lining is badly in need of research and is improved.
Summary of the invention
The present invention provides a kind of half steel job contract to make the liner in pouring method; Be used for the new working lining cast of half steel bag; Also can according at the bottom of the different refinery practice and bag thereof of steel-making to cylinder-packing, the erosion degree of bag wall, through using impact block at the bottom of cast fetal membrane cast surge protection circle and the bag, repair half ladle working lining shape fully; And have good usability, solve the problems referred to above that background technology exists.
Technical scheme of the present invention is: the liner in pouring method is made in the job contract of a kind of half steel, comprises to use film tool cast surge protection circle and use bag end impact block, carries out according to the order of pouring into a mould the surge protection circle with impact block, back pouring ladle wall, again at the bottom of the first pouring ladle; Bag end impact block is positioned on the bag end permanent liner, is cast for one between the working lining at the bottom of bag end impact block and bag end permanent liner and the bag; Use film tool cast surge protection circle; The surge protection circle is positioned at bag end working lining and bag wall working lining join domain; The surge protection circle is a ring-type, covers bag end working lining and bag wall working lining join domain, is cast for one between surge protection circle and bag end working lining and the bag wall working lining.
The new working lining cast of half steel bag; Concrete processing step is following: on bag end permanent liner, working lining at the bottom of the first pouring ladle adopts vibrating head vibration moulding; When cast 200mm is thick; Place bag end impact block in the position in bag half steel water slug district, the end, working lining thickness is to 400-500mm at the bottom of the pouring ladle then, and bag end impact block becomes one with bag end working lining; Natural Health preservation 6-8 hour; On bag wall permanent liner, begin to pour into a mould the bag wall working lining that thickness is 140-170mm, adopt the auxiliary vibration moulding of mould self-vibration and vibrating head; Natural Health preservation 8-16 hour; Place the film tool of surge protection circle again, place, the slit cast surge protection circle between bag end working lining and bag wall working lining adopts vibrating head vibration moulding; The new working lining casting and constructing of half steel bag is accomplished; After the new working lining casting and constructing of half steel bag is accomplished, natural Health preservation 16-24 hour, toast and come into operation after 64-96 hour, 0-400 ℃ of baking 24 hours down, 400-800 ℃ of baking 24-48 hour down, 800-1200 ℃ was toasted 16-24 hour down, comes into operation.
Half ladle working lining uses the residual lining in back to water and repair, and according to working lining, bag wall working lining erosion degree at the bottom of the bag of half steel bag, carries out the residual lining of half ladle working lining and waters and repair, and concrete processing step is following:
1. heavy if bag end working lining corrodes, it is residual thick in 300mm, selects for use bag end working lining to strip off the skin, and bag end impact block is torn open entirely builds by laying technology, carries out casting and constructing, and construction method is with the new working lining cast of aforementioned half steel bag;
2. lighter if bag end working lining corrodes, it is residual thick in 300mm, selects for use bag end working lining to take off the restorative procedure that leather sheath waters; Cover waters construction: with pneumatic pick to bag end working lining strip off the skin handle after, adopt vibrating head vibration moulding, it is 400-500mm that the bag basic skill or training waters the back gross thickness as lining, after natural Health preservation 8-16 hour, the residual cover of half ladle working lining waters construction and accomplishes; After the residual lining of half ladle working lining waters, natural Health preservation 16-24 hour, toast and come into operation after 64-96 hour, 0-400 ℃ of down baking 24 hours, 400-800 ℃ of baking 24-48 hour down, 800-1200 ℃ of baking 16-24 hour down continues to come into operation.
Use the residual lining in back to water and restorative procedure according to said half ladle working lining, use, after cover watering 1-2 circulation of construction, double ladle wall working lining, bag end working lining complete removal carry out the new working lining of half steel bag and pour into a mould.
Main innovate point of the present invention has two places: the one, placing bag end impact block in the position in bag half steel water slug district, the end, and bag end impact block becomes one with bag end working lining; Reduce the integrated poured time of half steel bag, made also that impact zone is more anti-at the bottom of the half steel bag bag washes away, the integrated poured time that the half steel bag has been practiced thrift in the use of bag end impact block, improved efficient and the service life that has prolonged the half steel bag.The 2nd, place, the slit cast surge protection circle between bag end working lining and bag wall working lining is poured into a mould through mould; The flowability of half steel water is far longer than molten steel; Just have the phenomenon of drill steel in apertured place; The enormous pressure that should bear half steel water in bag end working lining and the junction of bag wall working lining, the impulsive force of bearing half steel water again is the weakness zone of half steel bag; Pour into a mould a surge protection circle herein, reduced corner angle and wedge angle, promptly alleviated impact, effectively avoided the generation of drill steel again, improved the service life of half steel bag greatly, reduced half steel bag cylinder-packing refractory consumption rate amount.
Good effect of the present invention: the present invention according to the different refinery practice and bag thereof of steel-making to cylinder-packing at the bottom of, the erosion degree of bag wall; Through using impact block at the bottom of cast fetal membrane cast surge protection circle and the prefabricated bag; Reach the purpose of repairing half ladle working lining shape and good usability fully; Thereby prolonged for half ladle working lining service life, reduced half steel bag cylinder-packing refractory consumption rate amount; The present invention is used to pour into a mould the cover that working lining at the bottom of new working lining of half steel bag and the bag corrodes the heavy residual lining of bag wall and waters, and has satisfied second ladle working lining pouring technique requirement of the different refinery practice conditions of steel-making; The present invention is applicable to that the cover of the integrated poured and residual lining of the new working lining pours of all kinds of steel-making half steel bags waters construction; Half ladle working lining can overlap and water 2 times; Comprehensive cylinder-packing can reach more than 450 heats service life, and the job contract of ton steel half steel is made the liner in pouring refractory consumption and reduced more than 1/3 on year-on-year basis.
Description of drawings
Fig. 1 is an embodiment of the invention structural representation;
Fig. 2 is positioned at half steel water slug district sketch map for impact block at the bottom of the embodiment of the invention bag;
Fig. 3, Fig. 4, Fig. 5 are followed successively by front view, left view and the vertical view of impact block at the bottom of the embodiment of the invention bag;
Fig. 6 is embodiment of the invention cast surge protection circle film tool sketch map;
Among the figure, 3, half steel bag involucrum, 4, bag end permanent liner, 5, bag wall permanent liner, 6, bag end impact block, 7, bag end working lining, 8, bag wall working lining, 9, the surge protection circle, 10, hanger, 11, mould.
The specific embodiment
Below, the present invention is described further through embodiment.
The liner in pouring method is made in the job contract of a kind of half steel, comprises to use film tool 11 cast surge protection circles 9 and use bag end impact block 6, carries out according to the order of pouring into a mould the surge protection circle with impact block, back pouring ladle wall, again at the bottom of the first pouring ladle; Bag end impact block is positioned on the bag end permanent liner, is cast for one between bag end impact block 6 and bag end permanent liner 4 and the bag end working lining 7; Use film tool cast surge protection circle; Surge protection circle 11 is positioned at bag end working lining 5 and bag wall working lining 8 join domains; The surge protection circle is a ring-type, covers bag end working lining and bag wall working lining join domain, is cast for one between surge protection circle and bag end working lining and the bag wall working lining.
The new working lining cast of half steel bag; Concrete processing step is following: on bag end permanent liner 4, working lining 7 at the bottom of the first pouring ladle, adopt vibrating head vibration moulding; When cast 200mm is thick; Place bag end impact block 6 in the position in bag half steel water slug district, the end, working lining thickness is to 400-500mm at the bottom of the pouring ladle then, and bag end impact block becomes one with bag end working lining; Natural Health preservation 6-8 hour; On bag wall permanent liner 5, begin to pour into a mould the bag wall working lining 8 that thickness is 140-170mm, adopt the auxiliary vibration moulding of mould self-vibration and vibrating head; Natural Health preservation 8-16 hour; Place the film tool 11 of surge protection circle again, place, the slit cast surge protection circle 9 between bag end working lining and bag wall working lining adopts vibrating head vibration moulding; The new working lining casting and constructing of half steel bag is accomplished; After the new working lining casting and constructing of half steel bag is accomplished, natural Health preservation 16-24 hour, toast and come into operation after 64-96 hour, 0-400 ℃ of baking 24 hours down, 400-800 ℃ of baking 24-48 hour down, 800-1200 ℃ was toasted 16-24 hour down, comes into operation.
Half ladle working lining uses the residual lining in back to water and repair, and according to working lining, bag wall working lining erosion degree at the bottom of the bag of half steel bag, carries out the residual lining of half ladle working lining and waters and repair, and concrete processing step is following:
1. heavy if bag end working lining corrodes, it is residual thick in 300mm, selects for use bag end working lining to strip off the skin, and bag end impact block is torn open entirely builds by laying technology, carries out casting and constructing, and construction method is with the new working lining cast of aforementioned half steel bag;
2. lighter if bag end working lining corrodes, it is residual thick in 300mm, selects for use bag end working lining to take off the restorative procedure that leather sheath waters; Cover waters construction: with pneumatic pick to bag end working lining strip off the skin handle after, adopt vibrating head vibration moulding, it is 400-500mm that the bag basic skill or training waters the back gross thickness as lining, after natural Health preservation 8-16 hour, the residual cover of half ladle working lining waters construction and accomplishes; After the residual lining of half ladle working lining waters, natural Health preservation 16-24 hour, toast and come into operation after 64-96 hour, 0-400 ℃ of down baking 24 hours, 400-800 ℃ of baking 24-48 hour down, 800-1200 ℃ of baking 16-24 hour down continues to come into operation.
Use the residual lining in back to water and restorative procedure according to said half ladle working lining, use, after cover watering 1-2 circulation of construction, double ladle wall working lining, bag end working lining complete removal carry out the new working lining of half steel bag and pour into a mould.
With reference to accompanying drawing 2,3, impact block is arranged on the bag half steel water slug zone position at the end at the bottom of the said bag; Be fixed as one through the cast structure between the working lining at the bottom of bag end impact block and bag end permanent liner and the bag; Bag end impact block is the square boss shape.
With reference to accompanying drawing 1,6, be fixed as one through the cast structure between surge protection circle and bag end working lining and the bag wall working lining; Surge protection circle 9 is the surge protection circles that form with mould 11 cast; Surge protection circle film tool is the rounding frustum drum, and above it, is uniformly distributed with three hangers 10, is used for lifting; Put into the half steel bag that working lining at the bottom of wall working lining and the bag is wrapped in cast well to the film tool during use; Let it evenly all around, put into mixed pours then inward, shake with vibrating head again.
The present invention is applicable to that the cover of the integrated poured and residual lining of the new working lining pours of all kinds of steel-making half steel bags waters construction; The present invention has satisfied second ladle working lining pouring technique requirement of the different refinery practice conditions of steel-making; Half ladle working lining can overlap and water 2 times; Comprehensive cylinder-packing can reach more than 450 heats service life, and the job contract of ton steel half steel is made the liner in pouring refractory consumption and reduced more than 1/3 on year-on-year basis.
Claims (6)
1. the liner in pouring method is made in a half steel job contract; It is characterized in that comprising and use film tool (11) cast surge protection circle (9) and use bag end impact block (6), according at the bottom of the first pouring ladle with impact block, after pouring ladle wall, the order of pouring into a mould the surge protection circle again carry out; Bag end impact block is positioned on the bag end permanent liner, is cast for one between bag end impact block (6) and bag end permanent liner (4) and the bag end working lining (7); Use film tool cast surge protection circle; Surge protection circle (11) is positioned at bag end working lining (5) and bag wall working lining (8) join domain; The surge protection circle is a ring-type; Cover bag end working lining and bag wall working lining join domain, be cast for one between surge protection circle and bag end working lining and the bag wall working lining.
2. the liner in pouring method is made in said a kind of half steel job contract according to claim 1, it is characterized in that the new working lining cast of half steel bag, and concrete processing step is following: on bag end permanent liner (4); Working lining (7) at the bottom of elder generation's pouring ladle; Adopt vibrating head vibration moulding, when cast 200mm is thick, place bag end impact block (6) in the position in bag half steel water slug district, the end; Working lining thickness is to 400-500mm at the bottom of the pouring ladle then, and bag end impact block becomes one with bag end working lining; Natural Health preservation 6-8 hour; On bag wall permanent liner (5), begin to pour into a mould the bag wall working lining (8) that thickness is 140-170mm, adopt the auxiliary vibration moulding of mould self-vibration and vibrating head; Natural Health preservation 8-16 hour; Place the film tool (11) of surge protection circle again, place, the slit cast surge protection circle (9) between bag end working lining and bag wall working lining adopts vibrating head vibration moulding; The new working lining casting and constructing of half steel bag is accomplished; After the new working lining casting and constructing of half steel bag is accomplished, natural Health preservation 16-24 hour, toast and come into operation after 64-96 hour, 0-400 ℃ of baking 24 hours down, 400-800 ℃ of baking 24-48 hour down, 800-1200 ℃ was toasted 16-24 hour down, comes into operation.
3. the liner in pouring method is made in said a kind of half steel job contract according to claim 1; It is characterized in that half ladle working lining uses the residual lining in back to water and repair; According to working lining, bag wall working lining erosion degree at the bottom of the bag of half steel bag; Carry out the residual lining of half ladle working lining and water and repair, concrete processing step is following:
1. heavy if bag end working lining corrodes, it is residual thick in 300mm, selects for use bag end working lining to strip off the skin, and bag end impact block is torn open entirely builds by laying technology, carries out casting and constructing, and construction method is with the new working lining cast of aforementioned half steel bag;
2. lighter if bag end working lining corrodes, it is residual thick in 300mm, selects for use bag end working lining to take off the restorative procedure that leather sheath waters; Cover waters construction: with pneumatic pick to bag end working lining strip off the skin handle after, adopt vibrating head vibration moulding, it is 400-500mm that the bag basic skill or training waters the back gross thickness as lining, after natural Health preservation 8-16 hour, the residual cover of half ladle working lining waters construction and accomplishes; After the residual lining of half ladle working lining waters, natural Health preservation 16-24 hour, toast and come into operation after 64-96 hour, 0-400 ℃ of down baking 24 hours, 400-800 ℃ of baking 24-48 hour down, 800-1200 ℃ of baking 16-24 hour down continues to come into operation.
4. make the liner in pouring method according to claim 1,2,3 said a kind of half steels jobs contract, it is characterized in that said bag at the bottom of impact block be arranged on the bag half steel water slug zone position at the end.
5. the liner in pouring method is made in said a kind of half steel job contract according to claim 4, and it is characterized in that wrapping end impact block is the square boss shape.
6. make the liner in pouring method according to claim 1,2 or 3 said a kind of half steel jobs contract; It is characterized in that surge protection circle 9 is the surge protection circles that form with mould 11 cast, surge protection circle film tool is the rounding frustum drum, and above it, is uniformly distributed with three hangers 10; Put into the half steel bag that working lining at the bottom of wall working lining and the bag is wrapped in cast well to the film tool; Let it evenly all around, put into mixed pours then inward, shake with vibrating head again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110361254 CN102407559B (en) | 2011-11-15 | 2011-11-15 | Method for pouring working lining of half steel ladle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110361254 CN102407559B (en) | 2011-11-15 | 2011-11-15 | Method for pouring working lining of half steel ladle |
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| CN102407559A true CN102407559A (en) | 2012-04-11 |
| CN102407559B CN102407559B (en) | 2013-07-24 |
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| CN 201110361254 Expired - Fee Related CN102407559B (en) | 2011-11-15 | 2011-11-15 | Method for pouring working lining of half steel ladle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353820A (en) * | 2014-11-07 | 2015-02-18 | 武汉钢铁(集团)公司 | Manufacturing method of permanent layer of hot metal tank |
| CN111790899A (en) * | 2020-07-27 | 2020-10-20 | 上海电气上重铸锻有限公司 | Tundish for steel ingot casting and preparation method thereof |
| JP7406095B2 (en) | 2020-03-24 | 2023-12-27 | 日本製鉄株式会社 | Molten steel pot |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700572A (en) * | 2009-11-20 | 2010-05-05 | 武汉钢铁(集团)公司 | Method for building container bottom of carbon-containing molten steel container |
| CN101767197A (en) * | 2010-01-27 | 2010-07-07 | 莱芜钢铁股份有限公司 | Method for pouring steel ladle working lining |
| KR20110108975A (en) * | 2010-03-30 | 2011-10-06 | 현대제철 주식회사 | Ladle of steel making |
-
2011
- 2011-11-15 CN CN 201110361254 patent/CN102407559B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700572A (en) * | 2009-11-20 | 2010-05-05 | 武汉钢铁(集团)公司 | Method for building container bottom of carbon-containing molten steel container |
| CN101767197A (en) * | 2010-01-27 | 2010-07-07 | 莱芜钢铁股份有限公司 | Method for pouring steel ladle working lining |
| KR20110108975A (en) * | 2010-03-30 | 2011-10-06 | 현대제철 주식회사 | Ladle of steel making |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353820A (en) * | 2014-11-07 | 2015-02-18 | 武汉钢铁(集团)公司 | Manufacturing method of permanent layer of hot metal tank |
| CN104353820B (en) * | 2014-11-07 | 2016-08-10 | 武汉钢铁(集团)公司 | A kind of hot-metal bottle permanent layer manufacture method |
| JP7406095B2 (en) | 2020-03-24 | 2023-12-27 | 日本製鉄株式会社 | Molten steel pot |
| CN111790899A (en) * | 2020-07-27 | 2020-10-20 | 上海电气上重铸锻有限公司 | Tundish for steel ingot casting and preparation method thereof |
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| CN102407559B (en) | 2013-07-24 |
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Granted publication date: 20130724 Termination date: 20131115 |